This study highlighted the application of a two-stepped extraction method for extraction and separation of oxymatrine from Sophora flavescens Ait. extract by utilizing silica-confined ionic liquids as sorbent. The optimized silica-confined ionic liquid was firstly mixed with plant extract to adsorb oxymatrine. Simultaneously, some interference, such as matrine, was removed. The obtained suspension was then added to a cartridge for solid phase extraction. Through these two steps, target compound was adequately separated from interferences with 93.4% recovery. In comparison with traditional solid phase extraction, this method accelerates loading and reduces the use of organic solvents during washing. Moreover, the optimization of loading volume was simplified as optimization of solid/liquid ratio.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jchromb.2011.11.025 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Sequential Vapor Infiltration Treatment Enhances the Ionic Current Rectification Performance of Composite Membranes Based on Mesoporous Silica Confined in Anodic Alumina.
Langmuir
December 2016
Beijing Key Laboratory of Materials for Energy Conversion and Storage, BNU Key Laboratory of Environmentally Friendly and Functional Polymer Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
Ionic current rectification of nanofluidic diode membranes has been studied widely in recent years because it is analogous to the functionality of biological ion channels in principle. We report a new method to fabricate ionic current rectification membranes based on mesoporous silica confined in anodic aluminum oxide (AAO) membranes. Two types of mesostructured silica nanocomposites, hexagonal structure and nanoparticle stacked structure, were used to asymmetrically fill nanochannels of AAO membranes by a vapor-phase synthesis (VPS) method with aspiration approach and were further modified via sequence vapor infiltration (SVI) treatment.
View Article and Find Full Text PDFApplication of anion-exchange imidazolium silica for the multiphase dispersive extraction of phenolic acids.
J Sep Sci
August 2013
College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China.
This paper reports the application of a multiphase dispersive extraction method to the extraction, separation, and determination of the phenolic acids from Salicornia herbacea L. using silica-confined ionic liquids as sorbents. A suitable sorbent for phenolic acid extraction and separation was first identified based on the adsorption behavior of the phenolic acids on different silica-confined ionic liquids.
View Article and Find Full Text PDFSelective extraction and separation of oxymatrine from Sophora flavescens Ait. extract by silica-confined ionic liquid.
J Chromatogr B Analyt Technol Biomed Life Sci
January 2012
Department of Chemical Engineering, Inha University, Nam-Ku, Incheon, Republic of Korea.
This study highlighted the application of a two-stepped extraction method for extraction and separation of oxymatrine from Sophora flavescens Ait. extract by utilizing silica-confined ionic liquids as sorbent. The optimized silica-confined ionic liquid was firstly mixed with plant extract to adsorb oxymatrine.
View Article and Find Full Text PDFSolid phase extraction of lactic acid from fermentation broth by anion-exchangeable silica confined ionic liquids.
Talanta
January 2011
Department of Chemical Engineering, Inha University, 253 Yonghyun-Dong, Nam-Ku, Incheon 402-751, South Korea.
Three anion-exchangeable, silica-confined ionic liquids were synthesized for solid phase extraction of lactic acid from fermentation broth, followed by high-performance liquid chromatography coupled to ultraviolet detection. By comparing the adsorption isotherms of lactic acid on different silica-confined ionic liquids, interactions between the lactic acid and sorbents were investigated. The adsorbed amounts were then fitted into different adsorption isotherm equations; finally, the Langmuir equation was selected.
View Article and Find Full Text PDFSeparation of xylose and glucose on different silica-confined ionic liquid stationary phases.
Anal Chim Acta
September 2010
Department of Chemical Engineering, Inha University, 253 Yonghyun-Dong, Nam-Ku, Incheon 402-751, Republic of Korea.
Xylose and glucose, as the main hydrolyzed products of plant cell wall, were separated by silica-confined ionic liquid (IL) stationary phases. Five different stationary phases were synthesized and characterized. Instead of using the traditional NH(2) column, the imidazolium stationary phases exhibit excellent retention to the xylose and glucose.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!